From CloudModding OoT Wiki
Actor 0x006E
Version VRom VRam Size
Debug 00C6F4A0 00C6F8E0 {{{ram-start}}} {{{ram-end}}} 440
NTSC 1.0 00CBA310 00CBA6F0 {{{ram-start}}} {{{ram-end}}} 3E0
PAL MQ 00C238C0 00C23CB0 {{{ram-start}}} {{{ram-end}}} 3F0

ovl_Bg_Mjin is the warp pad actor. It's notable for the so called "Ocarina Pedestal" that spawns in Zora's Fountain.

U1.0 Notes

CBA680 - The list of object dependencies for the medallion textures starts here. 
Changing this order likely changes the actor variable's settings. Values are:
0062 0063 0064 0065 0066 0067